The Einstein Strikes Back

So apparently theories of so-called "dark matter" have all been based on explaining anomalous experimental data that turns out to just be rounding errors.

Now F I Cooperstock and S Tieu of the University of Victoria have reworked the problem using general relativity in place of Newtonian gravity, and they find no need to assume the existence of a halo of exotic dark matter to fit the observed rotation curves.

(via Slashdot.)